Sensors Integration achieves Six Sigma accuracy in food label inspection with 30% cost reduction

Food and beverage companies face critical safety risks from label mismatches, with the average food recall costing $10 million per incident. Existing inspection systems assumed products were good until failure was detected, leading to potential errors. Manual operator mistakes such as accidentally pressing a teach button could cause days of passing defective products.

Sensors Integration developed the CRIS (Control Reliable Inspection System) using four Cognex DataMan 474 barcode scanners with Edge Intelligence for 360-degree inspection. The system uses a fail-to-safe approach assuming all product is mislabeled until proven correct. RFID-controlled access, time-stamped event logging, and automated line stopping after three consecutive failures provide additional safety layers.

The system achieved accuracy greater than Six Sigma, handling a high volume of UPC codes without a single fail in testing. Costs were reduced by about 30% through control design and multi-reader sync. Using a smaller PLC saved about $10,000, and overall design reduced costs by more than $30,000. Build times and integration periods were shortened.

• A fail-to-safe inspection philosophy (assume bad until proven good) provides superior accuracy over traditional approaches
• Multi-reader sync technology can dramatically reduce PLC costs and system complexity
• RFID-controlled access and event logging prevent accidental operator errors that could compromise food safety